Ipv4 or ipv6 to cloudflare, ipv6 ONLY to origin

Is it possible to set Cloudflare up with ONLY IPv6 to the origin server but IPv4 or ipv6 to cloudflare?
I guess this relies on Cloudflare being able to translate IPv4 to IPv6 during the proxying?
Is this even possible?

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Totally possible. I do this. My DNS records here are only IPv6. That’s all. Cloudflare public DNS for my site is IPv4 and IPv6.

As with all connections, your server sees the Cloudflare IP address that’s connecting, so that will be IPv6 from this list. But the headers will include the actual IP address of the visitor.

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Thanks so much. With the shortage of IPv4 addresses this is a relief since I can easily add IPv6 addresses to my origin server

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